Development and Test of Video Systems for Airborne Surveillance of Oil Spills.
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION MOFFETT FIELD CALIF AMES RESEARCH CENTER
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Five video systems - potentially useful for airborne surveillance of oil spills - were developed, flight-tested, and evaluated. The systems are 1 conventional black and white TV 2 conventional TV with false color 3 differential TV 4 prototype Lunar Surface TV and 5 field-sequential TV. Wavelength and polarization filtering were utilized in all systems. Greatly enhanced detection of oil spills, relative to that possible with the unaided eye, was achieved. The most practical video system is a conventional TV camera with silicon-diode-array image tube, filtered with a Corning 7-54 filter and a polarizer oriented with its principal axis in the horizontal direction. Best contrast between oil and water was achieved when winds and sea states were low. The minimum detectable oil film thickness was about 0.1 micrometer. Author
- Optical Detection and Detectors
- Water Pollution and Control